Externi titulky

StreamCinemaLib/API/StreamSubtitle.cs

@@ -6,4 +6,6 @@ public class StreamSubtitle
 {
   public string language { get; set; } // two letter ISO code
   public bool forced { get; set; }
-}
+  public string? _id { get; set; }
+  public string? src { get; set; } // url to external subtitles
+}

StreamCinemaWeb/Pages/LinkPage.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Web;
+using Microsoft.Extensions.Primitives;
 using StreamCinema.Webshare;
 using StreamCinemaLib.API;
 using StreamCinemaWeb.Layouts;
@@ -38,5 +39,42 @@ public class LinkPage : BasicLayout
     }
 
     w.WriteLine("<div><a href=\"" + link.ToString() + "\">" + HttpUtility.HtmlEncode(link.ToString()) + "</a></div>");
+
+    // External subtitles
+    StringValues subs = req.Query["sub"];
+    if (subs.Count != 0) {
+      w.WriteLine("<h2>Externí titulky</h2>");
+      foreach (string i in subs) {
+        (string lang, Uri uri) = await ProcessSubtitleLinkAsync(i, req.HttpContext.RequestAborted);
+        w.WriteLine("<div><a href=\"" + uri.ToString() + "\">" + HttpUtility.HtmlEncode(lang) + "</a></div>");
+      }
+    }
+  }
+
+  private static async Task<(string, Uri)> ProcessSubtitleLinkAsync(string link, CancellationToken cancel) {
+    if (link == null)
+      throw new ArgumentNullException();
+
+    // Format: <lang>:<provider>:<id>
+    int a = link.IndexOf(':');
+    int b = link.IndexOf(':', a + 1);
+    if (a < 0 || b < 0)
+      throw new FormatException();
+    
+    string lang = link.Substring(0, a);
+    string provider = link.Substring(a + 1, b - a - 1);
+    string rawId = link.Substring(b + 1);
+    Uri result;
+    switch (provider) {
+      case "webshare":
+        result = await LinkGenerator.GenerateDownloadLinkAsync(rawId, "", cancel);
+        break;
+      case "http":
+        result = new Uri(rawId);
+        break;
+      default:
+        throw new NotSupportedException();
+    }
+    return (lang, result);
   }
 }

StreamCinemaWeb/Pages/StreamsPage.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Text;
 using System.Web;
 using StreamCinemaLib.API;
 using StreamCinemaWeb.Layouts;
@@ -40,7 +41,16 @@ public class StreamsPage : BasicLayout
     w.WriteLine("<div class=\"media-streams\">");
     foreach (StreamCinemaLib.API.Stream i in streams)
     {
-      w.WriteLine("<div class=\"media-stream\"><a href=\"/link/" + i.provider + "/" + HttpUtility.UrlEncode(i.ident) + "/" + HttpUtility.UrlEncode(i.name) + "/" + HttpUtility.UrlEncode(title) + "\">");
+      // Gather external subtitles
+      StringBuilder extSubtitles = new StringBuilder();
+      if (i.subtitles != null && i.subtitles.Count != 0)
+        foreach (StreamSubtitle j in i.subtitles)
+          if (j.src != null)
+            extSubtitles.Append("&sub=" + HttpUtility.UrlEncode(GetCompactExternalSubtitle(j.language, new Uri(j.src))));
+      if (extSubtitles.Length > 0)
+        extSubtitles[0] = '?';
+
+      w.WriteLine("<div class=\"media-stream\"><a href=\"/link/" + i.provider + "/" + HttpUtility.UrlEncode(i.ident) + "/" + HttpUtility.UrlEncode(i.name) + "/" + HttpUtility.UrlEncode(title) + extSubtitles.ToString() + "\">");
 
       w.WriteLine($"<div class=\"stream-basic\">{Math.Round((double)(i.size ?? 0) / (1024 * 1024 * 1024), 2)} GB ({i.date_added})</div>");
 
@@ -75,4 +85,21 @@ public class StreamsPage : BasicLayout
     }
     w.WriteLine("</div>");
   }
+
+  private static string GetCompactExternalSubtitle(string lang, Uri uri) {
+    string provider = "http";
+    string id = uri.ToString();
+    switch (uri.Host) {
+      case "webshare.cz":
+        const string WebsharePrefix = "#/file/";
+        if (uri.AbsolutePath == "/" && uri.Fragment.StartsWith(WebsharePrefix)) {
+          provider = "webshare";
+          id = uri.Fragment.Substring(WebsharePrefix.Length);
+        }
+        break;
+    }
+
+    // Format: <lang>:<provider>:<id>
+    return lang + ":" + provider + ":" + id;
+  }
 }